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FIX - Rear Differential Coupling Growl (Whine) Noise
Hey Everyone. (2008 RAV4 Sport I4)
I wanted to get a good thread with some COMPLETE information for the Rear Differential Noise that MANY of us have gone through and will go through.
I just spent half my day completing this and I wanted to give you all the information I have as I don't want any of us to have to pay Toyota's ridiculous cost for a new Coupler (About 1k).
I went ahead and attached a Toyota Technical Service Bulletin to this threat that will list out EVERYTHING that i had to do to complete this job. While I know that there have been several threads to note the T-SB-0080-13 Bulletin, I think it would be beneficial to list out not only that but some other parts.
I got this (FEBEST KIT-ST215 Transmission Coupling Kit). 18.99$ on Amazon for USA. I can confirm this one will work for the 2008 RAV4. I did see that it changed in 2009-2012. So please keep that in mind.
After following the bulletin and getting the coupler out, I had to get a shop to press out and in the new bearing for me. I paid around 70$ for them to clean up the housing, the dust shield, and press the new bearing in. (Way cheaper then a new coupler!)
It sounds fantastic now and no Jet Turbine noise. It seems that bearing got updated and only one side was sealed on the original bearing in the housing. There was a rubber gasket that went on the bearing but the backside was not sealed. This caused a lot of water to go in and corrode the bearing.
I HIGHLY suggest you download the Service Bulletin and follow the steps. The only thing I will say is that the Drive Shaft does stick on the coupler very hard so you will need to pry that up. We got a chisel/Pry bar under there and lifted it up without a ton of fuss.
I am also debating creating a video on this so more individuals can come to the correct info because of the videos on the Matrix Coupler and a lot of questions about the RAV4 are asked on there.
Any questions about this, please let me know. I hope this helps someone out!